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On the role of moving elastic–plastic boundaries in strain gradient plasticity

R H J Peerlings

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Gradient plasticity theories which are used to describe size effects require nonstandard boundary conditions. We believe that the role of these boundary conditions in combination with a moving elastic–plastic boundary has so far not been well understood. In order to clarify the conditions which are required at such an internal boundary, semi-analytical solutions are derived for a foil in pure bending. Two variants of gradient theories are considered, for which the necessary conditions are significantly different.


PACS

46.35.+z Viscoelasticity, plasticity, viscoplasticity

46.25.Cc Theoretical studies

Subjects

Condensed matter: structural, mechanical & thermal

Dates

Issue 1 (January 2007)

Received 8 June 2006, in final form 30 August 2006

Published 7 December 2006



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